<template>
    <div>
        <!--<h1>当前求和为：{{ $store.state.sum }}</h1>-->
        <h1>当前求和为：{{ sum }}</h1>
        <!--<h3>当前求和放大10倍为：{{ $store.getters.bigSum }}</h3>-->
        <h3>当前求和放大10倍为：{{ bigSum }}</h3>
        <!--<h3>我在 {{ $store.state.school }} 学习 {{ $store.state.subject }}</h3>-->
        <h3>我在 {{ school }} 学习 {{ subject }}</h3>
        <h3 style="color: red">下方组件的总人数是：{{ persons.length }}</h3>
        <select v-model.number="n">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
        </select>
        <button @click="increment(n)">+</button>
        <button @click="decrement(n)">-</button>
        <button @click="incrementOdd(n)">当前求和为奇数再加</button>
        <button @click="incrementWait(n)">等一等再加</button>
    </div>
</template>

<script>
import {mapState, mapGetters, mapActions, mapMutations} from 'vuex' // 映射$store.state中的值，可以省略写$store.state

export default {
    name: 'Count',
    data() {
        return {
            n: 1, //用户选择的数字
        }
    },
    computed: {
        ...mapState('countConfig',['sum', 'school', 'subject']),
        ...mapState('personConfig',['persons']),
        ...mapGetters('countConfig',['bigSum']),
    },
    methods: {
        ...mapMutations('countConfig',{increment: 'INCREMENT', decrement: 'DECREMENT'}),
        ...mapActions('countConfig',['incrementOdd', 'incrementWait']),
    },
}
</script>

<style>
button {
    margin-left: 5px;
}
</style>